Motor Retention

Motor Retention

Securing the motor in the motor mount is a key safety feature of a model rocket. Motor retainers, motor hooks, and thrust rings are three ways to ensure that your motor stays inside the motor tube to help ensure successful deployment of the recovery device, and to prevent the motor and rocket from an uncontrolled descent.

  • 13mm - 18mm Motor Adapter 13mm - 18mm Motor Adapter Packaging

    13mm - 18mm Adapter (3 pack)

    Estes

    MSRP: $5.99
    $5.09
    Some small model rockets with 18mm motor mounts can fly successfully on smaller 13mm motors. This motor adapter securely holds a 13mm black powder motor inside an 18mm motor mount. Make sure you research suitable motors before flying a 13mm motor in an...
    EST-2316
    MSRP: $5.99
    $5.09
  • Estes 24mm Plastic Motor Retainer Estes 24mm Plastic Motor Retainer packaging

    24mm Threaded Plastic Motor Retainer

    Estes

    MSRP: $7.99
    $6.79
    Estes' lightweight plastic motor retainer is a convenient way to securely retain composite 24mm motors in the motor tube. It is not suitable for Estes black powder motors that with a cardboard motor case. Mount the interior threads to the aft end of a...
    EST-9751
    MSRP: $7.99
    $6.79
  • 29mm Threaded Aluminum Motor Retainer

    Aerotech

    MSRP: $15.99
    $14.99
    Aerotech's machined and anodized aluminum motor retainer serves the critical role of retaining 29mm mid power motors with built in thrust rings, such as Aerotech's 29mm RMS or single use composite motors, and Cesaroni's reloadable motors. The convenient...
    AT-19002
    MSRP: $15.99
    $14.99
  • Estes 29mm motor retainer Estes 29mm motor retainer packaging

    29mm Threaded Plastic Motor Retainer

    Estes

    MSRP: $8.99
    $7.64
    Estes' lightweight plastic motor retainer is a convenient way to securely retain composite 29mm motors in the motor tube. It is not suitable for Estes black powder motors that with a cardboard motor case. Mount the interior threads to the aft end of a...
    EST-9750
    MSRP: $8.99
    $7.64
  • HAMR Motor Retainer

    HAMR Motor Retainer

    Public Missiles Ltd.

    MSRP: $27.95
    $23.76
    A perfect fit for PML motor tubes, their HAMR motor retainers integrate nicely with PML kits. They secure composite motors nicely in the motor tube and allow you to quickly change motors with a simple twist of the retainer.
    PML-HAMR29-SET
    MSRP: $27.95
    $23.76
  • Aeropack 24mm - 29mm and 29mm - 38mm motor adapters Example of a CTI 24mm motor using a 24mm - 29mm motor adapter to fit a 29mm motor mount Honest John rocket

    Motor Adapter

    Aeropack

    $13.00
    Aeropack aluminum motor adapters securely mount any motor with a thrust ring like Aerotech composite motors in a larger motor tube.  For example, this allows you to fly a 24mm motor in a 29mm motor tube. The sturdy and lightweight aluminum adapter...
    API-MA
    $13.00
  • Aeropack 24mm - 29mm and 29mm - 38mm motor adapters Example of a CTI 24mm motor using a 24mm - 29mm motor adapter to fit a 29mm motor mount Honest John rocket

    Motor Adapter Spacer

    Aeropack

    $6.00
    Aeropack aluminum motor adapters come with spacers to help secure the motor in a motor retainer, and these loose parts do sometimes get lost.  Instead of buying an entirely new motor retainer, you can buy just the replacement spacer for use in these...
    API-MAS
    $6.00
  • Aeropack Motor Retainers Aeropack Motor Retainers

    Motor Retainer Assembly

    Aeropack

    $15.00
    Aeropack set the standard for aluminum motor retainers, so you can quickly and easily switch motors after flight without any tools. Just unscrew the threaded cap and load a new motor. The durable aluminum construction holds up to motor exhaust heat and...
    API-RA
    $15.00
  • Aeropack motor retainers

    Motor Retainer Body

    Aeropack

    $8.00
    Save money by sharing the same motor retainer cap between two rockets. You can use the motor retainer cap from one full Aeropack Motor Retainer Assembly with this Aeropack Motor Retainer Body to secure motors in 2 different rockets. Properly sized...
    API-RB
    $8.00
  • Aeropack motor retainer cap

    Motor Retainer Cap

    Aeropack

    $8.00
    For those times when you lose a motor retainer cap, here is your inexpensive way to replace just the cap without buying a whole new retainer.  Sizing here is simple...just match the motor mount size you are replacing, from 24mm, 29mm, 38mm, 54mm,...
    API-RC
    $8.00
  • Estes PSII 224mm - 29mm Motor Adapter Estes PSII 224mm - 29mm Motor Adapter

    PSII 24mm - 29mm Adapter (2 pack)

    Estes

    MSRP: $5.99
    $5.09
    Many mid power rockets with 29mm motor mounts can fly successfully on less powerful, smaller diameter 24mm motors. This motor adapter addresses 2 potential issues with flying either composite or black powder 24mm motors in a 29mm motor tube. First, the...
    EST-9753
    MSRP: $5.99
    $5.09